Question
A car going at 30 m/s undergoes acceleration of 2 m/s^2 for 4 sec. How far did it travel while it was accelerating??
Plz help thx
Plz help thx
Answers
Anonymous
like I said, at every second the speed (30m/s) increases by 2m/s
so, 30m/s+ (2m/s^2)(4s)
so, 30m/s+ (2m/s^2)(4s)
Happy Face
how did you get that answer?
I mean like what is the formula to find out how far it was accelerating?
I mean like what is the formula to find out how far it was accelerating?
Anonymous
opps, I read the problem incorrectly. Here's the formula.
The distance = (1/2)*(acceleration)*(time)^2 + (initial velocity)*(time).
The distance = (1/2)*(acceleration)*(time)^2 + (initial velocity)*(time).
Happy Face
what is the initial velocity?
Anonymous
30m/s (the speed you start with)
Happy Face
but i got 184 for the distance...is that right? And also, on this answer sheet it says that the distance is 136 not 184. Is that correct or wrong?
TutorCat
It is 136. check your work!
Happy Face
thx!
i must've made a calculation error.
i must've made a calculation error.